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Finding the Fourth Proportional to 79,366.95, 109,531.31 and 52,462.80

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Solution

The fourth proportional to 79,366.95, 109,531.31 and 52,462.80 is: 72,401.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,366.95 : 109,531.31 = 52,462.80 : x
  2. Step 2: Convert to fraction form
    79,366.95/109,531.31 = 52,462.80/x
  3. Step 3: Cross multiply
    79,366.95x = 109,531.31 × 52,462.80
  4. Step 4: Simplify right side
    79,366.95x = 5,746,319,210.27
  5. Step 5: Solve for x
    x = 5,746,319,210.27/79,366.95
  6. Step 6: Final answer
    x = 72,401.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.